National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Hazardous Weather Conditions

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

50°F

10°C

Humidity 89%
Wind Speed NW 5 mph
Barometer 30.19 in (1022.4 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 4 Oct 6:54 am CDT
Extended Forecast for

Waterloo IA

Flood Warning October 4, 07:32am until October 4, 02:12pm
Click here for hazard details and duration
Flood Warning
  •  
    Flood Warning October 4, 07:32am until October 4, 02:12pm

    NOW until 2:12pm Sun

    Flood Warning

  • Today

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 45. North northwest wind around 5 mph becoming calm in the evening.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 68. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 51. South wind 6 to 9 mph.

    Low: 51 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. South southwest wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 69. North northwest wind 6 to 9 mph.
Tonight
Clear, with a low around 45. North northwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 68. Calm wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Clear, with a low around 51. South wind 6 to 9 mph.
Tuesday
Sunny, with a high near 73. South southwest wind 10 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 74. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IA
 42.49°N 92.35°W
Last Update:
6:31 am CDT Oct 4, 2026
Forecast Valid:
7am CDT Oct 4, 2026-6pm CDT Oct 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation